Screw-holder for drivers.



PATBNTBDAUG. 27, 1907.

T J PEGLEY & G O LEOPOLD SCREW HOLDER FOR DRIVERS.

APPLICATION FILED MAR. 4, 1907.

I .UNITED STATES PATENT OFFICE.Y

l THOMAS `.T. FEGLEY AND GEORGE O. LEOPOLD, OF

PHILADELPHIA, l PENNSYLVANIA,

ASSIGNORS TO NORTH BROS. MFG. CO., OF PHILADELPHIA. PENNSYLVANIA, A OOR-PORATION OF PENNSYLVANIA.

SCREW-HOLDER AFOR DRIVERS.

, O. LEOPOLD, citizens'I of the United States, residing in Philadelphia,Pennsylvania, have invented certain Improvements in Screw-Holders forDrivers, of which the following is a specification. i v

The object of our invention is to simplify the construction of a screwholderrand so design it that it can be operated by one hand.

In the accompanying drawings: Figure 1, is a plan view of a screwdriver, showing our` improved screw holding attachment in place; Fig. 2,is a side view; Fig.f3, is avi/ew similar to Fig. 2, with the screwhold'- ing attachment in section; Fig. 4, is an end view;l

Fig. 5, is a section on the line 5 5, Fig. l; Fig. 6, is a section onthe line 6-6, Fig. l; Fig. 7, is an end view showing the screw holdingattachment detached from the screw driver; Fig. 8, is a view showing theattachment in position on the driver, with the spring compressed and thejaws opened ready to receive a screw, and Figs. 9 and l0, are detailperspective views of parts of the driver. A

A is the handle of a screw driver and B is the shank having the ordinaryflat tapered blade b'. We have shown what is termed a ratchet screwdriver, but any type of screw driver may be used without departing fromour invention.

D `is'the screw holding attachment, which can be applied to the shank Bof the screw driver, as clearly shown in Fig. l. This attachment has twojaws C-C, which are attached to a head C laving an'opening c for thefree passage of the shank of the screw driver. The opening is elongated,as shown in Fig. 6, so that the flattened blade b will readily passthrough it.

Mounted on the jaws is a disk E, clearly shown in Fig. 10, which has anelongated opening e terminating in lateral recesses c into which theedges ofthe jaws C-G extend so thatie jaws are controlled by thissleeve. The elongated opening e is of such a length.

that'the wide portion b/ of the blade b, Fig. 3, will readily passVthrough it, but the opening e is so narrow that when the blade isturned at iight angles, after it is inserted in the screw holder, thedisk E will rest upon the shoulder b as shown in Fig. 3, preventing itfrom becoming detached from the blade; and Vthus it forms an abutment.Between this abutment disk E and the head C isimounted a coiled springF, which forces the head away from the disk and consequently( draws thejaws O-C through the disk.

It will be noticed on referring to the Figs. 7 and 9, that the inwardmovement of the jaws is stopped by the shoulders c and the jaws arecurved at c2 in such a manner that when the head C is pushed forward forSpecification of Letters Patent.

Application filed March 4, 1907. Serial No. 360,477.

Patented Aug. 27, 1907.

instance to the position shown in Fig. S-the jaws are forced apart asthey must travel in the notched portions e of the disk E and when inthisy position a screw head can be inserted between the jaws and afterreleasing the jaws they will immediately grasp the screw and draw itagainst the end of the blade b and by' turning the blade it will findthe slot in the screw and when it enters the slot the screw will be heldrigidly in position.

The ends of the jaws O O are` notched at c3 so as to center the shank ofthe screw, holding it more rigidly thanif the jaws were simply straight.The spring is' held to the disk E, in the presentin'stance, by means oflugs e2 struck from the disk, as shown in Fig. 10.

It will be understood that the spring may be attached to the disk in anymanner without departing from the essential features of the invention.

The operation of the device'is as follows: Ii it is desired to use ascrew driver in a place where it is inconvenient to use two hands, thisdevice can be readily applied to the screw driver by simply pushing itonto the shank B past the blade and turningit at right angles so thatthe narrow portion of the opening e in the disk E will bear against thewide portion bf of the blade. This wide portion of the blade will holdthe disk rigidly, so that by simply pushing upon the head C with thehand that holds the screw driver the jaws will open and a screw can beplaced in the jaws by the other hand and on releasing the pressure thejaws will recede by the action of the spring, holding the screw directlyunder the head and drawing the screw towards the ends of the blade andon turning this blade it will find the slot in the screw. The screw willthen be in position to be'driven in thc ordinary manner.

The taper of the ends of the jaws is suiiicient to cause the jaws toseparate and release the head of the screw after it is driven nearly thefull distance into the material, but i t will, of course, be understoodthat byl pressing upon the head C the jawscan be quickly removed fromthe screw and the screw driver lcan then drive the screw entirely home.

YWe claim:-

1. The combination in a screw holding attachment for screw drivers, oftwo jaws. a head to which the jaws are attached, an abutment disk havingguides for the jaws, said jaws beigg shaped so as to be moved apart whenthe head is move towards the disk, and a spring for sepa.- rating thehead from the disk, substantially a's described.

2. The combination in a screw holding attachment for screw drivers, oftwo jaws, a head to which the jaws are attached, anv abutment diskslotted to allow for the passage of the jaws, said jaws being shaped sothat when the head is moved towards the disk they will be separated andwhen moved away from the disk they will be drawn together, with a springtending to force the head away from l the disk, both the head and thedisk being perforated for the passage otthe shank of the screw driver,land the disk being so shaped as to engage the wide portion of the shank.substantially as described.

2;. The combination of a screw driver having a shank, with a flattenedand enlarged blade, a screw holding attachment consisting of two jaws, ahead to which the jaws are attached, and adisk through 4whicil the jawspass and by which they are guided, said head and disk having elongatedopenings for the passage ot the shank 0f the screw driver, the openingin the disk being s0 .vproportioned that when turned after the screw isinserted it will rest upon the enlarged portion of thc blade of thedriver. substantially as described.

4. 'lhe combination of a screw driver having a shank and a ilat blade,the blade having a-wide portion, a screw holding attachment consistingrot' two jaws and a head to which the jaws are attached, a diskthrough'which the jaws pass. and a spring mounted between the disk andthe head having an elongated opening for the passage of the shank of thescrew driver, the disk having an elongated opening notched at thecorners to form passages for the jaws, the Width ofthe said opening inthe jaws being less than the width ot' the blade of the driver so thatwhen the screw driver is passed into the screw holder and turned at; ahalf revolution it will engage the disk and hold it against outwardmovement so that pressure can be applied to the head to compress thespring and open the jaws, the head being guided by ille shank portion ofthe screw driver, substantially as described.

.'1. 'lhc combination oi a screw drivel', a disk attached to the bladeof the screw driver' near the end. a head adapted to slide on the shankof the screw drivel', a springmounted t0 aci'. between the head and thedisk, two jaws attached to the head and extending through thc disk. thejaws being shaped so that when the head ls forced against the pressureot' the spring towards thc disk the jaws will be opened so that they canengage a screw, substantially as described.

in testimony whereof, we have signed our names to this specification, inthe presence of two subscribing witnesses.

THOMAS J. FEGLEY. eno'non o. LnoPoLD.4

Witnesses K Jos. H. KLEIN, WM. A. BARR.

